Optimization of Spectral Efficiency of Vehicular Wi-Fi-Ad-hoc Network using Cooperative Relayed Antenna Diversity Scheme

Subject Area: Telecommunication Engineering

This work focused on optimizing the spectral efficiency of the Wi-Fi-Ad-hoc network connection used in the study. A cooperative relayed antenna diversity scheme was employed in actualizing the set objective to improvethe received signal strength of the Wi-Fi network hereby enhancing the performance of spectral efficiency of the network. In characterizingthe proposed network,a free space environment anda frequency of 2.4GHz of Wi-Finetwork were chosen for the study. The mathematical equation of Friis in free space was adopted as the mathematical model of the network to determine the received signal strength of the network under study. This model was simulated in MATLAB platform with parameters of the characterized network to determine the received signal strength and path loss. Results of the simulation were used in the model of the characterized network to observe the effect of received signal strength on the spectral efficiency of the Wi-Fi Ad-hoc mode. However, the aim of the research was realized by utilizing the proposed cooperative relayed antenna diversity scheme. A mathematical model of the technique was used in determining its impact in improving the received signal strength of the network. An integrated mathematical model of the entire scheme was developed by modifying that of the characterized network. This was done by integrating the model of the technique into the model of the characterized network and simulated for behavioral observation of the effect of the technique on the network using MATLAB features. The results were compared with results gotten when switched diversity was implemented. It showed an average performance improvement of 23.84% in spectral efficiency.